[PATCH] drm/amdgpu: fix the gfx hang while use per-ib secure flag
Liu, Aaron
Aaron.Liu at amd.com
Tue Feb 25 14:30:25 UTC 2020
[AMD Official Use Only - Internal Distribution Only]
Reviewed&Tested-by: Aaron Liu <aaron.liu at amd.com>
-----Original Message-----
From: Huang, Ray <Ray.Huang at amd.com>
Sent: Tuesday, February 25, 2020 9:58 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Koenig, Christian <Christian.Koenig at amd.com>; Liu, Aaron <Aaron.Liu at amd.com>; Tuikov, Luben <Luben.Tuikov at amd.com>; Pelloux-prayer, Pierre-eric <Pierre-eric.Pelloux-prayer at amd.com>; Huang, Ray <Ray.Huang at amd.com>
Subject: [PATCH] drm/amdgpu: fix the gfx hang while use per-ib secure flag
Since 6643ba1 frame control packets are only issued in presence of secure IB(s).
This causes hangs on some hardware (eg: Raven1). This patch restores the unconditionnal frame control packets issuing, that's to keep the per-IB logic regarding the secure flag.
Fixes: 6643ba1 drm/amdgpu: Move to a per-IB secure flag (TMZ)
Reported-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
Signed-off-by: Huang Rui <ray.huang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 41 +++++++++++++++++++-------------
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 5 ++--
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 15 ++++++------
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 13 +++++-----
4 files changed, 43 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 4b2342d..9713a7d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -131,7 +131,7 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
uint64_t fence_ctx;
uint32_t status = 0, alloc_size;
unsigned fence_flags = 0;
- bool secure;
+ int secure = -1;
unsigned i;
int r = 0;
@@ -216,7 +216,6 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
amdgpu_ring_emit_cntxcntl(ring, status);
}
- secure = false;
for (i = 0; i < num_ibs; ++i) {
ib = &ibs[i];
@@ -228,27 +227,37 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
!amdgpu_sriov_vf(adev)) /* for SRIOV preemption, Preamble CE ib must be inserted anyway */
continue;
- /* If this IB is TMZ, add frame TMZ start packet,
- * else, turn off TMZ.
- */
- if (ib->flags & AMDGPU_IB_FLAGS_SECURE && ring->funcs->emit_tmz) {
- if (!secure) {
- secure = true;
- amdgpu_ring_emit_tmz(ring, true);
+ if (job && ring->funcs->emit_frame_cntl) {
+ if (secure == -1) {
+ if (ib->flags & AMDGPU_IB_FLAGS_SECURE) {
+ secure = 1;
+ amdgpu_ring_emit_frame_cntl(ring, true, true);
+ } else {
+ secure = 0;
+ amdgpu_ring_emit_frame_cntl(ring, true, false);
+ }
+ } else {
+ if (secure == 1 &&
+ !(ib->flags & AMDGPU_IB_FLAGS_SECURE)) {
+ secure = 0;
+ amdgpu_ring_emit_frame_cntl(ring, false, true);
+ amdgpu_ring_emit_frame_cntl(ring, true, false);
+ } else if (secure == 0 &&
+ ib->flags & AMDGPU_IB_FLAGS_SECURE) {
+ secure = 1;
+ amdgpu_ring_emit_frame_cntl(ring, false, false);
+ amdgpu_ring_emit_frame_cntl(ring, true, true);
+ }
}
- } else if (secure) {
- secure = false;
- amdgpu_ring_emit_tmz(ring, false);
}
amdgpu_ring_emit_ib(ring, job, ib, status);
status &= ~AMDGPU_HAVE_CTX_SWITCH;
}
- if (secure) {
- secure = false;
- amdgpu_ring_emit_tmz(ring, false);
- }
+ if (job && ring->funcs->emit_frame_cntl)
+ amdgpu_ring_emit_frame_cntl(ring, false,
+ (secure == 1) ? true : false);
#ifdef CONFIG_X86_64
if (!(adev->flags & AMD_IS_APU))
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 24caff0..4d019d6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -166,7 +166,8 @@ struct amdgpu_ring_funcs {
void (*emit_reg_write_reg_wait)(struct amdgpu_ring *ring,
uint32_t reg0, uint32_t reg1,
uint32_t ref, uint32_t mask);
- void (*emit_tmz)(struct amdgpu_ring *ring, bool start);
+ void (*emit_frame_cntl)(struct amdgpu_ring *ring, bool start,
+ bool secure);
/* priority functions */
void (*set_priority) (struct amdgpu_ring *ring,
enum drm_sched_priority priority); @@ -247,7 +248,7 @@ struct amdgpu_ring { #define amdgpu_ring_emit_wreg(r, d, v) (r)->funcs->emit_wreg((r), (d), (v)) #define amdgpu_ring_emit_reg_wait(r, d, v, m) (r)->funcs->emit_reg_wait((r), (d), (v), (m)) #define amdgpu_ring_emit_reg_write_reg_wait(r, d0, d1, v, m) (r)->funcs->emit_reg_write_reg_wait((r), (d0), (d1), (v), (m)) -#define amdgpu_ring_emit_tmz(r, b) (r)->funcs->emit_tmz((r), (b))
+#define amdgpu_ring_emit_frame_cntl(r, b, s)
+(r)->funcs->emit_frame_cntl((r), (b), (s))
#define amdgpu_ring_pad_ib(r, ib) ((r)->funcs->pad_ib((r), (ib))) #define amdgpu_ring_init_cond_exec(r) (r)->funcs->init_cond_exec((r)) #define amdgpu_ring_patch_cond_exec(r,o) (r)->funcs->patch_cond_exec((r),(o))
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 7b61583..748ac35 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -256,7 +256,7 @@ static int gfx_v10_0_rlc_backdoor_autoload_enable(struct amdgpu_device *adev); static int gfx_v10_0_wait_for_rlc_autoload_complete(struct amdgpu_device *adev); static void gfx_v10_0_ring_emit_ce_meta(struct amdgpu_ring *ring, bool resume); static void gfx_v10_0_ring_emit_de_meta(struct amdgpu_ring *ring, bool resume); -static void gfx_v10_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start);
+static void gfx_v10_0_ring_emit_frame_cntl(struct amdgpu_ring *ring,
+bool start, bool secure);
static void gfx10_kiq_set_resources(struct amdgpu_ring *kiq_ring, uint64_t queue_mask) { @@ -4729,12 +4729,13 @@ static void gfx_v10_0_ring_emit_de_meta(struct amdgpu_ring *ring, bool resume)
sizeof(de_payload) >> 2);
}
-static void gfx_v10_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start)
+static void gfx_v10_0_ring_emit_frame_cntl(struct amdgpu_ring *ring, bool start,
+ bool secure)
{
- if (amdgpu_is_tmz(ring->adev)) {
- amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
- amdgpu_ring_write(ring, FRAME_TMZ | FRAME_CMD(start ? 0 : 1));
- }
+ uint32_t v = secure ? FRAME_TMZ : 0;
+
+ amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
+ amdgpu_ring_write(ring, v | FRAME_CMD(start ? 0 : 1));
}
static void gfx_v10_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg) @@ -5188,7 +5189,7 @@ static const struct amdgpu_ring_funcs gfx_v10_0_ring_funcs_gfx = {
.init_cond_exec = gfx_v10_0_ring_emit_init_cond_exec,
.patch_cond_exec = gfx_v10_0_ring_emit_patch_cond_exec,
.preempt_ib = gfx_v10_0_ring_preempt_ib,
- .emit_tmz = gfx_v10_0_ring_emit_tmz,
+ .emit_frame_cntl = gfx_v10_0_ring_emit_frame_cntl,
.emit_wreg = gfx_v10_0_ring_emit_wreg,
.emit_reg_wait = gfx_v10_0_ring_emit_reg_wait,
.emit_reg_write_reg_wait = gfx_v10_0_ring_emit_reg_write_reg_wait,
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 1c7a16b..fbde712 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -5230,12 +5230,13 @@ static void gfx_v9_0_ring_emit_de_meta(struct amdgpu_ring *ring)
amdgpu_ring_write_multiple(ring, (void *)&de_payload, sizeof(de_payload) >> 2); }
-static void gfx_v9_0_ring_emit_tmz(struct amdgpu_ring *ring, bool start)
+static void gfx_v9_0_ring_emit_frame_cntl(struct amdgpu_ring *ring, bool start,
+ bool secure)
{
- if (amdgpu_is_tmz(ring->adev)) {
- amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
- amdgpu_ring_write(ring, FRAME_TMZ | FRAME_CMD(start ? 0 : 1));
- }
+ uint32_t v = secure ? FRAME_TMZ : 0;
+
+ amdgpu_ring_write(ring, PACKET3(PACKET3_FRAME_CONTROL, 0));
+ amdgpu_ring_write(ring, v | FRAME_CMD(start ? 0 : 1));
}
static void gfx_v9_ring_emit_cntxcntl(struct amdgpu_ring *ring, uint32_t flags) @@ -6477,7 +6478,7 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = {
.emit_cntxcntl = gfx_v9_ring_emit_cntxcntl,
.init_cond_exec = gfx_v9_0_ring_emit_init_cond_exec,
.patch_cond_exec = gfx_v9_0_ring_emit_patch_cond_exec,
- .emit_tmz = gfx_v9_0_ring_emit_tmz,
+ .emit_frame_cntl = gfx_v9_0_ring_emit_frame_cntl,
.emit_wreg = gfx_v9_0_ring_emit_wreg,
.emit_reg_wait = gfx_v9_0_ring_emit_reg_wait,
.emit_reg_write_reg_wait = gfx_v9_0_ring_emit_reg_write_reg_wait,
--
2.7.4
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